Air Quality Index (AQI) in New Zealand 🇳🇿

Live Air Quality Index (AQI) and PM2.5 Levels in New Zealand

Currently, the Air Quality Index (AQI) in Wellington, the capital of New Zealand, is measured at a score of 39. According to the US EPA health standard, this air quality rating is categorized as Good. The current atmosphere in Wellington is influenced by a PM2.5 (fine particulate matter) concentration of 7.1 µg/m³ and PM10 levels recorded at 11.6 µg/m³. Monitoring of gaseous pollutants shows Nitrogen Dioxide (NO2) at 0.7 µg/m³.

Beyond the primary urban hubs, atmospheric conditions and smog levels fluctuate across New Zealand based on industrial output, traffic density, and local weather patterns. Real-time pollution data and respiratory health alerts are also being actively monitored in cities like Auckland, Christchurch, Manukau City, North Shore and Tauranga. Tracking these air quality metrics is essential for residents nationwide to manage outdoor exposure and maintain respiratory safety during periods of increased particulate concentration.

Air Quality Snapshot: New Zealand Right Now

Across 10 monitored cities in New Zealand, live air quality currently ranges from a low of 1 AQI in Christchurch (the cleanest air right now) to a high of 59 AQI in New Plymouth (the most polluted). By US EPA health band, the nationwide distribution stands at 5 Good, 5 Moderate. The average fine-particulate (PM2.5) concentration across these cities is 7.8 µg/m³ — approximately 1.6 times the World Health Organization (WHO) annual air quality guideline of 5 µg/m³.

New Zealand Air Quality: Major Cities Index

Palmerston North
1
New Plymouth
1

* Air Quality Index (AQI) data for New Zealand is calculated using the US EPA standard. Information is processed from multiple monitoring stations detecting PM2.5, PM10, and gaseous pollutants to ensure accuracy for respiratory health planning.

What Today's Readings Mean in New Zealand

The median reading across 10 monitored cities is 49.5 AQI. The national spread is 58 points, from 1 in Christchurch to 59 in New Plymouth. Average PM2.5 is 7.8 µg/m³ (1.6× the WHO annual guideline).

At least one monitored location is in the Moderate range. People unusually sensitive to air pollution may want to reduce prolonged outdoor exertion there.

See the complete AQI and pollutant reference scales

Health & Scientific Resources

→ How to read US EPA Air Quality Index before going outside → Understanding Air Quality Index levels and what they mean → When haze forms and what it does to air quality

Air Quality in New Zealand — FAQ

Common questions about AQI levels, pollutants, and data sources for New Zealand.

What is the current air quality in New Zealand?

Live AQI readings for 10 city(ies) across New Zealand are listed above on the US EPA 0-500 scale.

Where does New Zealand's AQI data come from?

Real-time readings come from ground-based monitoring stations operated by national environmental agencies in New Zealand, delivered via WeatherAPI.com and aggregated using the EPA AQI formula.

What is a healthy AQI value in New Zealand?

On the EPA scale used worldwide, 0-50 is Good, 51-100 is Moderate, 101-150 is Unhealthy for sensitive groups, 151-200 is Unhealthy, 201-300 is Very Unhealthy, and 301-500 is Hazardous. The WHO 24-hour PM2.5 guideline is 15 μg/m³.

Why do AQI readings vary between cities in New Zealand?

Air quality is highly local — major pollution sources (traffic, industry, dust, wildfires) cluster around cities, while wind direction and topography move them around. Comparing nearby readings on this page is the best way to see how conditions change across New Zealand.